Kyupiko! - Fujimatsu Tenshi No Mismanagement summary:

Fushimatsu Fushio is an unpopular loser whom is screwed over by a lazy Cupid, Kyupiko, who gives him the curse of being hated by the entirety of womankind. Years later God realizes how horrible of a situation this is for the poor boy and kicks the lazy Kyupiko out of heaven until she fixes the situation.